package com.liang.state;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @Author:liangli
 * @Date:2020/11/17 16:19
 */
//模拟倒计时
public class TestSleep2 {
    public static void main(String[] args) throws InterruptedException {
//        tenDown();
        //打印系统当前时间
        Date startTime=new Date(System.currentTimeMillis());
        while (true){
            Thread.sleep(1000);
            System.out.println(new SimpleDateFormat("HH:mm:ss").format(startTime));
            startTime=new Date(System.currentTimeMillis());
        }
    }
    public static void tenDown() throws InterruptedException {
        int num =10;
        while (true){
            Thread.sleep(1000);
            System.out.println(num--);
            if (num<0){
                break;
            }
        }
    }
}
